Toyota Sienna Service Manual: Position Sensor Circuit

DESCRIPTION

When SET and 1 or 2 are pressed, the position sensor detects the mirror position and sends the signal to the outer mirror control ECU. Then when position 1 or 2 is pressed, the outer mirror control ECU drives the mirror motor based on the memorized sensor positions.

HINT: The power mirror control system is part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See Multiplex Communication System)

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

1. Connect the intelligent tester to the DLC3.
2.  Ignition switch on.
3.  Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
4. Read the DATA LIST according to the display on the tester.

MIRROR-L/MIRROR-R

OK: Tester displayed is 0 V to 5 V.

2 CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - OUTER MIRROR CONTROL ECU)

1. Disconnect the O10 or O12 ECU connector.
2.  Disconnect the O13 or O14 outer mirror connector.
3. Measure the resistance according to the value(s) in the table below.

Resistance

*1: LH side
*2: RH side

REPLACE OUTER MIRROR CONTROL ECU